python - Check if string matches pattern

Question

How do I check if a string matches this pattern?

Uppercase letter, number(s), uppercase letter, number(s)...

Example, These would match:

A1B2
B10L1
C1N200J1

These wouldn't ('^' points to problem)

a1B2
^
A10B
   ^
AB400
^

Answer 1

import re
pattern = re.compile("^([A-Z][0-9]+)+$")
pattern.match(string)